Non-contact power supply device and non-contact power supply method
First Claim
Patent Images
1. A power supply device comprising:
- a power transmitting unit configured to control a transmission of a short beacon to recognize a power receiving device, a long beacon for waking-up a communications circuit of the power receiving device, and a charging power in a contactless manner;
a power transmitting coil configured to transmit the short beacon and the charging power in the contactless manner; and
a controlling unit configured to perform either one or both of varying signal levels of the transmitted short beacon until the power receiving device is recognized, and varying signal levels of the transmitted long beacon until an advertisement signal is received from the power receiving device.
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Abstract
There are provided a non-contact power supply device and a non-contact power supply method, in which a short beacon is transmitted to recognize a power receiving device, a long beacon is transmitted to wake-up a communications circuit of the power receiving device, and charging power is transmitted in a contactless manner, wherein at least one of signal levels of the short beacon and signal levels of the long beacon is varied.
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Citations
35 Claims
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1. A power supply device comprising:
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a power transmitting unit configured to control a transmission of a short beacon to recognize a power receiving device, a long beacon for waking-up a communications circuit of the power receiving device, and a charging power in a contactless manner; a power transmitting coil configured to transmit the short beacon and the charging power in the contactless manner; and a controlling unit configured to perform either one or both of varying signal levels of the transmitted short beacon until the power receiving device is recognized, and varying signal levels of the transmitted long beacon until an advertisement signal is received from the power receiving device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power supply device, comprising:
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a power transmitting coil; a power transmitting unit configured to control the power transmitting coil to transmit a short beacon to recognize a power receiving device, to transmit a long beacon according to a period to wake-up a communications circuit of the power receiving device, and to transmit a charging power in a contactless manner; and a controlling unit configured to increase, until an advertisement signal is received, a signal level of the long beacon in response to the power receiving device being recognized by the transmission of the short beacon. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A power supply device, comprising:
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a power transmitting coil; a power transmitting unit configured to control the power transmitting coil to transmit a short beacon according to a first period to recognize a power receiving device, to wake up a communications circuit of the power receiving device by transmitting a long beacon according to a second period different from the first period, and to transmit a charging power in a contactless manner; and a controlling unit configured to perform either one or both of varying signal levels of the transmitted short beacon until the power receiving device is recognized, and varying signal levels of the transmitted long beacon until an advertisement signal is received from the power receiving device. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A non-contact power supply method comprising:
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receiving, in a power save state, an advertisement signal from a power receiving device by transmitting a short beacon for recognizing the power receiving device according to a first period; transmitting, in the power save state, a long beacon for waking-up a communications circuit of the power receiving device according to a second period different from the first period; performing, in a low power state, communications with the power receiving device; and transmitting, in a power transfer state, the charging power to the power receiving device, wherein signal levels of the short beacon and signal levels of the long beacon are controlled to be varied. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
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Specification